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Hello, This is a tutorial explaining the conversion process for the old and new terrain systems for Rigs of Rods 0.36-0.39 (.terrn) to 0.4 (.terrn2). Introduction The tracks (terrains) we typically use in this community are very simple when compared to traditional RoR ones -- ours are basically models (mesh files) of arenas or pieces of land floating on either: Nothing, which gives the illusion that you are driving in mid-air when outside of the arena/landOr A small tiled texture (such as concrete, grass or dirt), which is what you typically see if you were to venture outside of an arena. "Normal" terrains (for example: Desert Trails) use heightmap images which determine flat land, valleys, peaks, etc. Because our track system is typically so simple, it is not necessary to follow the full conversion process. First, let's look at what makes up a terrain for 0.37-0.39 --> 0.4+ (all of these can be edited with any text editor, I prefer WordPad): terrn --> .terrn2: Every terrain needs this. This is what tells RoR there is a track to load -- it contains information such as the track name, spawn point position, object position, etc. This file system was replaced by a combination of both .terrn2 and .tobj systems in versions .4.0 and up. These are likely all you will need to convert a basic track (read further). cfg --> .otc: Contains info for terrain texture, heightmaps, world sizes, how the texture gets tiled, etc. This file system was replaced by the .otc system in version .4.0 and up. It is not required for a terrain to function. os: This is the configuration file for the Caelum sky/weather, and is the same for all versions of RoR. It is also not a required file, especially if using a skybox model. odef and .material: Technically these are not part of the terrain system, but you will see them. Think of them as extensions for .mesh files (props) -- ODEF tells RoR whether a prop is collidable or not, and what the surface will be (for example: dirt, concrete, asphalt, metal etc). Material files simply contain information for the prop textures and tells RoR how to use a texture (for example: if an object should be shiny, flat, transparent etc). These two file systems are used in every version of RoR so no changes are needed. The conversion This is very easy and likely only requires the creation of two new files, YourTrack.terrn2 (basic info) and YourTrack.tobj (prop positions). Let's start with the main terrain file. Let's assume you want to convert an existing track named Houston2016.terrn. Create a new text file and name it Houston2016.terrn2. Copy and paste the following: [General] Name = Your Track GeometryConfig = YourTrack.otc Water=0 AmbientColor = 1, 1, 1 //CaelumConfigFile = YourTrack.os StartPosition = 512 0 512 SandStormCubeMap = tracks/skyboxcol Gravity = -9.81 CategoryID = 129 Version = 2 GUID = dc178e9c-840d-443f-b249-434433ae5fd0 [Authors] terrain = Your Name [Objects] YourTrack.tobj= Replace all instances of "YourTrack" with the name of the terrain you wish to convert (for example: "YourTrack" to "Houston2016"), along with the name of the track and the author's name as follows: [General] Name = Houston 2016 GeometryConfig = houston2016.otc Water=0 WaterLine=0 AmbientColor = 1, 1, 1 //CaelumConfigFile = houston2016.os StartPosition = 512 101 512 SandStormCubeMap = tracks/skyboxcol Gravity = -9.81 CategoryID = 129 Version = 2 GUID = dc178e9c-840d-443f-b249-434433ae5fd1 [Authors] terrain = Helen Weales [Objects] houston2016.tobj= Next, create a text file named Houston2016.tobj. This is the file that determines where your track props will be placed. Copy the following from the old Houston2016.terrn, and paste it in Houston2016.tobj: To If you want to alter the Caelum sky/weather settings (not required), the following is a template (an example of its filename would be "houston2016.os"): caelum_sky_system Houston2016.terrn.os { sun { ambient_multiplier 0.5 0.5 0.5 diffuse_multiplier 3 3 2.7 specular_multiplier 0.35 0.35 0.35 auto_disable_threshold 0.05 auto_disable true } moon { ambient_multiplier 0.2 0.2 0.2 diffuse_multiplier 1 1 .9 specular_multiplier 0.1 0.1 0.1 auto_disable_threshold 0.05 auto_disable true } sky_dome { haze_enabled no sky_gradients_image WhiteSky.png atmosphere_depth_image AtmosphereDepth.png } } Unfortunately I don't know anything about these settings, so alter at your own risk! Something worth noting is the "StartPosition" line in the .terrn2 file. This controls where the first truck spawns. It's likely you will want to copy the first three set of numbers from the main model position coordinates (in the .tobj file). Alter as needed. Place the new files in the track ZIP or folder (deletion of older files is not necessary and allows for the terrain to be compatible for all RoR versions). Next, open Rigs of Rods 0.4.5 and test the terrain to make sure everything works properly. That's it! A simple process that once learned, should only take a few minutes to complete. One final note (not sure how to properly explain this so please bear with me): Your model must be COMPLETELY on or off the tiled portion of the world or else the part not on the tiled portion will be non-collidable. I don't know why this happens. Once I figure out how to add mud I will update this tutorial. If anyone knows, please PM me. Best of luck. -HW

So I was attempting to convert a couple of .37 tracks to 0.4.7 for my own personal use and I keep getting the same error. What am i doing wrong? I'm following the tutorial in the forums to the letter and it never works. Your help would be greatly appreciated.

I tried to convert the track to 0.4 (thanks for the tutorial) but I failed after some attempts. Can somebody do it for me? Thank you for the help in advance.

Hey guys, I use the 0.4 version of ROR, and I wanna be able to use the tracks from this site, but I've tried converting them to the 0.4 .terrn2 format with a tutorial and I fail miserably. Is there anyone who could help me out and convert some for me? Or could someone lead me toward some that are converted? Anything would be very helpful, thanks!!!